<template>
  <div class="box">
    <h3>我是App</h3>
  </div>
</template>

<script lang="ts">
import { defineComponent } from 'vue'

export default defineComponent({
  setup() {
    return {}
  },
})
</script>

<style lang="scss" scoped>
.box {
  width: 100px;
  height:  400px;
  background: pink;
}
</style>
